Valve



Nov. 23 1926. 1,607,827

A. HERRMANN VALVE Fled'April 14. 1924 Patented Nov. 23, 19.26.

UNITED STATES ADOLPH HERRMANN, OF CHICAGO, ILLINOIS.'

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Application led April 14, 1924. Serial No. 706,409.

My-invention relates to valves of the disk type and has to do more particularly with double face disk valves, an object being tov provide an improved structure ofthis character having certain features in construction and operation moriJ particularly hereinafter pointed out in the specification and appended claims.

An object of my invention is to provide l a valve adapted for use n coffee urns, although of course not limited to such particular use. I nd that in the valves or faucets now in general'use on coffee urns of the type employed in restaurants, after using l them for a short time they leak. In my `improved valve I overcomethis defect by the use of a packing which surrounds the valve seats, so as to stop tlieslight leakage which usually occurs. In the 'use of a packing on valves for coifee urns, with the packing exposed to direct contact with the coffee while the valve is shut off, the colfee in contact with the packing frequently becomes bitter and thus renders the first part .25 of 4the coffee drawn from the valve afterl understood that this is merely for illustration and it will be apparent that the same principley and protection will apply when using it with other fluids. y

For a betterunderstanding of my invention reference is to be had to the accompanying drawing, in which- Fig. 1 is a face viewof-the preferred form of my valve; i

Fig. 2 is a sectional view along the line 2-2 of Fig. 1; and L 1 Fig. 3 shows a modified form of valve. Fig. 4 shows a modified form of valve. Referring now more in detail to the form shown in Fi s. 1 and 2, I provide a suitable casing including a front section 5 and rear section 6 secured to a suitable separating ring` 7, so as to provide a valve disk chamber 5 between the opposing faces of the front 'and rear sections. In this chamber is a suitable ldisk and in this form of my invention it comprises a double face annular disk 8 adapted to rotate in the valve chamber and in sliding contact with the engaged faces. 60 The' disk'8 has a suitable valve stem 9 connected therewith, having a handle 10. In this form of my invention the disk has a plurality of ports 8a' extending therethrough, there being four as indicated by the dotted line in Fig. 1. This disk, of course, is enclosed in the casing and in order to guide the user so that it may be deter-n mined when the ports 8aL register with the valve casing ducts, I employ an indicating handle 10 cut away at four positions corresponding with the ports 8*", as will be clear from Fig.y 1. In the valve seat construction employed, i that is the valve'seat in the casing against Y75 which the disk rests, the same arrangement is used in both front and rear sections of thcycasing to engage opposite faces of the disk and I will describe but one of them. This seat construction includes an annular section l1 having a port or duct 12 extending therethrough, the valve seat of the annular ring 11 bein ground so as to be in intimate contact wit the corresponding face of the disk.

The difficulty found in depending upon vsuch metallic faces alone is that after slight wear the liquid leaks by and drips from the faucet. To overcome this I provide an annular acking 13 which surrounds the annular ace 11, being preferably pressed into intimate Contact with the face of the disk by a spring 14. I find it desirable to have adjustment for vthis s ring and have found that this is preferaby done by ad- `justment from the outside. To this end I provide a nut 15 threaded on a hub surrounding the casing duct and connected with the spring 14 by small metal rods 16 fastened to a spring actuated ring 17 at one end and a ring 18 at the other end. 'Thus, as the nut 15 is adjusted on the hub y the ,tension of the spring 14 is varied accordingly. 4

The acking 13 may be of any'suitable materia and although I have shown a soft packing it is to be understood that a metallic packing may be employed. f It will also be apparent that the valve disk is balanced in the casing by the use of opposed s ring pressed packings, the ressure eing rom opposite sides and t4V erefore equalizing the action upon the valve disk and permitting an easier operation thereof. It will also be apparent that a simplified construction of the valve is provided bytheuse of front and back sections of the casy ing identical in arrangement.

In applying the valve it may be connectedv with inlets and an outlet spout, the iilet pipe being shown at 19 and the outlet at 20. These latter two members being threaded into the hubs as indicated, orthey may be secured in any suitable manner.

In theoperation of the valve the handle 10 is normally in aposition so that/@he port openings 8a in the valve disk' set to one side of the duct leading through the casing,

thereby maintaining the valve closed. Not

Figs. l and 2 the disk may be rotated and any of its ports used, this arrangement thus providing a valve of longer life.

In Fig. 3 I have shown a modified form of the valve, wherein I employ a disk or gate section 8 inthe form of a sector adapted to be reciprocated back and forth by a handle 10a to open and close the valve. The gate 8 fits with a corresponding recess or chamber in the casing sections as 6a, the front and back portions of which are of like construction as in Figs.` land 2, but of course of the shape indicated rather than of the circular disky type.

In Fig. 4 I show a circular diskvalve similar to that of Figs. l and 2 except that the casin 5a is cut oif so as to expose the disk 8. T is permits wiping ofr'the' disk so as to keepjt bright and clean and insure a better joint.

What I claim as newand desire to secure by United States LettersA Patent is:

1. :A valve comprising a ported rotatably slidable gate, a casing having an annular recess cut into its face forming a fiat annular ported valve seat against which the gate surrounding the valve seat port, and connections extending from the nut through the casing to the spring for adjusting the spring from outside the7 valve by operation of the nut. e

2. A double face disk -valve including a ported rotatable circular disk having two opposed`valve faces andF a casing having corresponding annular ported valve seats between which the disk is rotated, said casing enclosing a portion of the disk only whereby as the disk is rotated successive portions are exposed for cleaning, and opposed spring pressed packings surrounding the valve seats acting upon the disk and equalizing the pressure on opposed sides of the valve disk.

3. A valve of the character described comprising a casing including front and back like disc-like portions each having a boss on its outer tace, a lat separating ring clamped between the front and back portions to provide a chamber therebetween with opposing walls having an inletl port through the rear wall boss and an outlet port through the front wall boss extending through parallel faced valve seats, a rotatable double faced disk mounted in the chamber in sliding seating engagement with the valve seats, annular packincs surrounding the valve seats supported in the front and back portions of t ie casing, means for ressing said packings into intimate contact with the corresponding `faces of the disk to eiliect an equalizing pressure thereon and provide a balanced support for the disk, a rotatable shaft extending through the front and back portions of the casing for carrying the disk and having a forwardly extending end, and an operating handle carried by said forward extension.

4.. A valve comprising a casing including opposed spaced plates,` aligned inlet an outlet nipples extending through the plates having their inner ends spaced, a rotatable ported valve movable between the plates and nipples whereby to dispose the port in registration with said nipples or to one side thereof, packing rings slidable on the nipples and disposed upon opposite sides of lthe valve, resilient elements urging the packing rings into contacting engagement with the valve, and means at each side of the casing whereby to adjust the tension of the springs to com ensate for wear of the packing rings 4and ba ance the valve.

In witness whereof, I have hereunto subscribed my name this 20th day of March, 1924.

\ ADQLBH HERRMANN. 

